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These are just two of the countless quotes about how wonderful, inexplicable, and out-of-the-ordinary love is. In fact, if you have ever been in love, you know that love, in all its beauty and glory, can often be both mysterious and confusing.

Thank heavens for science, though. Yes, science.

Not many people realize this, but apparently a lot about love can be easily explained by science. Science, technology, and decades of research have helped us somehow understand the many facets of “this thing called love.”

23 really interesting facts about love

Below, we take a look at some of the most interesting facts about love to show you that, yes, those butterflies in your stomach and that heartbreak you feel are not only real—but backed by science. So read on and enjoy!

#1 There is forever. Well, not exactly. But we all want to believe in a forever with the love of our life, right? To give you some relief, monogamous relationships are possible and we are not all “animals.” Even animals, themselves, can stick to one partner, and mate only with one another for life. So, if you’re having a hard time landing “the one,” maybe you should find yourself a swan.

#2 Beating as one. Couples who are in love and in a romantic relationship are found to synchronize their heart rates *or, in science speak: co-regulate their physiologies* after they gaze into each other’s eyes for three minutes.

#3 Love is a drug. Falling in love can give you a high like you are on cocaine, a study says. This is because both can trigger the same feeling of euphoria to the brain. In fact, both love and cocaine stimulate 12 areas of the brain at the same time, releasing chemicals such as adrenaline, oxytocin, and dopamine.

#4 Cuddles, anyone? There is, in fact, a cuddle hormone called oxytocin that is released when you cuddle with your loved ones. This hormone is produced in the brain, ovaries, and testicles, and is involved in bonding two people together, such as mother and child, or you and your partner.

#5 Cuddles are also great painkillers. The oxytocin that is released in the body is found to significantly reduce the pain caused by headaches. So if you want to make love to your partner, but he tells you he has a headache, cuddle first, and the headache might go away in time for you to do the deed. Better yet, instead of pain medicine, give your lover a dose of some cuddling.

#6 Speaking of pain… Another fun fact about the power of love is that even by just looking at a picture of your loved one, your pain will decrease significantly. So, if you want to feel better, be sure to have a picture of your special someone by your bedside.

#7 And another thing: If you are lucky enough to have your loved one beside you while you’re in pain, be sure to hold his/her hand. Holding your loved one’s hand, like cuddling, can be so soothing that it can also relieve stress and pain.

#8 Achy, breaky heart. Surprisingly, that image of a heart with a zigzagging line down the middle, the ever-popular symbol for heartbreak, can be proven by science. Heartbreak is real. Deeply negative emotional triggers such as a breakup, a betrayal, or the loss of a loved one can give you strong chest pain and shortness of breath called Broken Heart Syndrome.

Love is a powerful feeling indeed

#9 Love is obsession. Someone in love often exhibits strange, out-of-character behavior that is also associated with someone who has Obsessive-Compulsive Disorder. If you are in the early, budding stage of love, you will have lower serotonin levels associated with happiness, while having higher levels of cortisol, which is associated with stress.

#10 Love is addiction. Studies show that looking at photos of your loved ones can trigger the caudate, the region of the brain responsible for cravings. So when you see your significant other’s photos on Instagram and you start to miss him/her, that’s actually the caudate doing its job.

#11 Same looks? A handful of research has identified a pattern showing that people with the same level of attractiveness end up together. This doesn’t mean that if you look and dress the same as your partner that you will marry each other *though some couples do begin to look like each other over time*. This only means that if you have the same perceived social desirability as your partner, you end up considering each other a match over other people.

#12 Opposites DO attract.Research has shown that couples who always agree aren’t really that romantically compatible. Couples who are not as close as they could be end up being happier in a relationship, because they have more things to learn from each other. So if you’re a cat person and your partner isn’t, that’s your cue.